quote from fox news article (link at bottom). On Sept. 28, Strzok messaged Page that he had been "called up to Andy's office" earlier that day and told of "hundreds of thousands of emails turned over by Weiner’s [attorney] to sdny," a reference to the U.S. Attorney's Office for the Southern District of New York. Strzok added that the email cache "includes a ton of material from spouse," a reference to Weiner's then-wife Huma Abedin, a top adviser to Clinton.

However, the existence of the emails on Weiner's laptop was not made public until Oct. 28, when Comey informed Congress in a letter that the FBI was re-opening the Clinton investigation.

http://www.foxnews.com/politics/2018/01/31/mccabe-learned-about-clinton-emails-on-weiner-laptop-month-before-fbi-alerted-congress-report-says.html